What question did this study set out to answer?

To determine the role of erythrocyte-specific adenosine A2B receptor (ADORA2B) signaling in counteracting hypoxia and preventing age-related cognitive and auditory decline.

June 17, 2021SHILAP Revista de lepidopterologíaOpen Access

Erythrocyte adenosine A2B receptor prevents cognitive and auditory dysfunction by promoting hypoxic and metabolic reprogramming

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Authors

QQQingfen QiangSecond Affiliated Hospital of Zhejiang University JMJeanne ManaloHouston Methodist HSHong SunChinese Academy of Medical Sciences & Peking Union Medical College

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Implication

Animal study demonstrates accelerated cognitive and hearing decline following erythrocyte ADORA2B loss in mice, indicating a protective metabolic axis against sensory aging.

Key Points

To determine the role of erythrocyte-specific adenosine A2B receptor (ADORA2B) signaling in counteracting hypoxia and preventing age-related cognitive and auditory decline.
Generated and evaluated mice with erythrocyte-specific deletion of ADORA2B (eAdora2b-/-) under normoxic and hypoxic conditions.
Assessed spatial learning, memory, and auditory function alongside cellular markers of microglial activation, inflammation, and glycolytic gene expression in the hippocampus, cortex, and cochlea.
Quantified downstream signaling through AMPK, bisphosphoglycerate mutase (BPGM) activity, and 2,3-BPG levels in both knockout and naturally aging mice.
Loss of erythrocyte ADORA2B triggered premature deficits in spatial learning, memory, and hearing, with environmental hypoxia further accelerating cognitive and cochlear functional decline.
eAdora2b-/- mice exhibited elevated pro-inflammatory cytokines, marked activation of microglia and macrophages, and attenuated compensatory glycolytic gene expression in the hippocampus, cortex, and cochlea.
ADORA2B stimulated AMPK and BPGM to drive 2,3-BPG synthesis and promote oxygen release, whereas erythroblast ADORA2B expression, BPGM mRNA, and BPGM activity progressively declined during normal aging.

Cite This Study

Qiang et al. (2021) studied this question.

synapsesocial.com/papers/69df1588b8d7e945666146cc https://doi.org/10.1371/journal.pbio.3001239

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Implication

Animal study demonstrates accelerated cognitive and hearing decline following erythrocyte ADORA2B loss in mice, indicating a protective metabolic axis against sensory aging.

Erythrocyte adenosine A2B receptor prevents cognitive and auditory dysfunction by promoting hypoxic and metabolic reprogramming

Discussion

Member takes

Implication

Key Points

Cite This Study

Erythrocyte adenosine A2B receptor prevents cognitive and auditory dysfunction by promoting hypoxic and metabolic reprogramming

Discussion

Member takes

Implication

Key Points

Cite This Study

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